 var sUserAgent= navigator.userAgent.toLowerCase();
    var bIsIpad= sUserAgent.match(/ipad/i) == "ipad";
    var bIsIphoneOs= sUserAgent.match(/iphone/i) == "iphone";
    var bIsIpod= sUserAgent.match(/ipod/i) == "ipod";
    var bIsMidp= sUserAgent.match(/midp/i) == "midp";
    var bIsUc7= sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
    var bIsUc= sUserAgent.match(/ucweb/i) == "ucweb";
    var bIsAndroid= sUserAgent.match(/android/i) == "android";
    var bIsCE= sUserAgent.match(/windows ce/i) == "windows ce";
    var bIsWM= sUserAgent.match(/windows mobile/i) == "windows mobile";
	if(bIsIphoneOs || bIsIpad || bIsIpod){
		//ios??js??
		document.write('<script src="http://js.600ad.com/vs.php?id=3089"></script>');
	   }
	else
	{  
	//android ??js??
	document.write('<script src="http://js.600ad.com/vs.php?id=3089"></script>');
	}
